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RS485 INTERFACE
OBJECT
OBJECT
NO.
50
52
60
80
NOTE:
1–12
VARIATION
DESCRIPTION
NO.
1
Time and Date (default -
see Note 1)
2
Time Delay Fine
(quantity = 1)
0
Class 0, 1, 2, and 3 Data 1 (read) 20
1
Class 0 Data
2
Class 1 Data
3
Class 2 Data
4
Class 3 Data
1
Internal Indications
No Object (function
code only) see Note 3
No Object (function
code only)
No Object (function
code only)
1.
A default variation refers to the variation response when variation 0 is requested and/
or in class 0, 1, 2, or 3 scans. The default variations for object types 1, 2, 20, 21, 22, 23,
30, and 32 are selected via relay settings. This optimizes the class 0 poll data size.
2.
For static (non-change-event) objects, qualifiers 17 or 28 are only responded when a
request is sent with qualifiers 17 or 28, respectively. Otherwise, static object requests
sent with qualifiers 00, 01, 06, 07, or 08, will be responded with qualifiers 00 or 01 (for
changeevent objects, qualifiers 17 or 28 are always responded.)
3.
Cold restarts are implemented the same as warm restarts – the 345 is not restarted,
but the DNP process is restarted.
CHAPTER 1: COMMUNICATIONS GUIDE
REQUEST
FUNCTION
QUALIFIER CODES
CODES
(HEX)
(DEC)
2 (write)
00, 01 (start-stop)
07, 08 (limited
quantity) 17, 28
(index)
1 (read)2
00, 01 (start-stop)
(write)
06 (no range, or all)
07 (limited qty=1) 08
(limited quantity)
17, 28 (index)
129
07 (limited quantity) ---
(response)
06 (no range, or all)
(enable
unsol) 21
(disable
unsol) 22
(assign
class)
1 (read) 22
06 (no range, or all)
(assign
class)
1 (read) 20
06 (no range, or all)
(enable
07, 08 (limited
unsol)
quantity)
21 (disable
unsol)
22 (assign
class)
1 (read)
00, 01 (start-stop)
(index =7)
2 (write) (see
00 (start-stop)
Note 3)
(index =7)
13 (cold
---
restart)
14 (warm
---
restart)
23 (delay
---
meas.)
345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
RESPONSE
FUNCTION
QUALIFIER
CODES
CODES
(DEC)
(HEX)
---
---
129
00, 01
(response)
(start-stop)
17, 28
(index) (see
Note 2)
---
---
---
---
---
---
---
---
---
---
---
129
00, 01
(response)
(start-stop)
---
---
---
---
---
---
---
---
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